Weave.jl/src/reader/reader.jl

131 lines
3.4 KiB
Julia

using JSON, YAML
function WeaveDoc(source, informat = nothing, doctype = nothing)
path, fname = splitdir(abspath(source))
basename = splitext(fname)[1]
isnothing(informat) && (informat = detect_informat(source))
header, chunks = parse_doc(read(source, String), informat)
isnothing(doctype) && (doctype = detect_doctype(source))
# update default chunk options from header
chunk_defaults = deepcopy(get_chunk_defaults())
if haskey(header, WEAVE_OPTION_NAME)
for key in keys(chunk_defaults)
if (val = get(header[WEAVE_OPTION_NAME], string(key), nothing)) !== nothing
chunk_defaults[key] = val
end
end
end
return WeaveDoc(
source,
basename,
path,
chunks,
"",
nothing,
doctype,
"",
header,
"",
"",
Highlights.Themes.DefaultTheme,
"",
chunk_defaults,
)
end
"""
detect_informat(path)
Detect Weave input format based on file extension of `path`.
"""
function detect_informat(path)
ext = lowercase(last(splitext(path)))
ext == ".jl" && return "script"
ext == ".jmd" && return "markdown"
ext == ".ipynb" && return "notebook"
return "noweb"
end
function parse_doc(document, informat)
document = replace(document, "\r\n" => "\n") # normalize line ending
return informat == "markdown" ? parse_markdown(document) :
informat == "noweb" ? parse_markdown(document; is_pandoc = true) :
informat == "script" ? parse_script(document) :
informat == "notebook" ? parse_notebook(document) :
error("unsupported input format given: $informat")
end
function pushopt(options::Dict, expr::Expr)
if Base.Meta.isexpr(expr, :(=))
options[expr.args[1]] = expr.args[2]
end
end
"""
detect_doctype(path)
Detect the output format based on file extension.
"""
function detect_doctype(path)
_, ext = lowercase.(splitext(path))
match(r"^\.(jl|.?md|ipynb)", ext) !== nothing && return "md2html"
ext == ".rst" && return "rst"
ext == ".tex" && return "texminted"
ext == ".txt" && return "asciidoc"
return "pandoc"
end
# inline
# ------
function DocChunk(text::AbstractString, number, start_line; notebook = false)
# don't parse inline code in notebook
content = notebook ? parse_inline(text) : parse_inlines(text)
return DocChunk(content, number, start_line)
end
const INLINE_REGEX = r"`j\s+(.*?)`"
const INLINE_REGEXES = r"`j\s+(.*?)`|^!\s(.*)$"m
function parse_inlines(text)::Vector{Inline}
occursin(INLINE_REGEXES, text) || return parse_inline(text)
inline_chunks = eachmatch(INLINE_REGEXES, text)
s = 1
e = 1
res = Inline[]
textno = 1
codeno = 1
for ic in inline_chunks
s = ic.offset
doc = InlineText(text[e:(s-1)], e, s - 1, textno)
textno += 1
push!(res, doc)
e = s + lastindex(ic.match)
ic.captures[1] !== nothing && (ctype = :inline)
ic.captures[2] !== nothing && (ctype = :line)
cap = filter(x -> x !== nothing, ic.captures)[1]
push!(res, InlineCode(cap, s, e, codeno, ctype))
codeno += 1
end
push!(res, InlineText(text[e:end], e, length(text), textno))
return res
end
parse_inline(text) = Inline[InlineText(text, 1, length(text), 1)]
include("markdown.jl")
include("script.jl")
include("notebook.jl")